It's the physical property that indicates the degree/intensity of heat present in a substance or an object. It can be expressed and measured according to various scales.
Questions tagged [temperature]
3415 questions
65
votes
6 answers
How long can you survive 1 million degrees?
I asked my Dad this once when I was about 14, and he said that no matter how short the amount of time you were exposed to such a great temperature, you would surely die. The conversation went something like:
Me: What about a millisecond?
Dad: Of…
Briguy37
- 991
6
votes
2 answers
Why do frozen objects have a higher propensity to snap/break cleanly than non-frozen/warmer ones?
Why do frozen objects have a higher propensity to snap/break cleanly than non-frozen/warmer ones?
John Allen
5
votes
2 answers
Does running water out of a faucet prevent the pipes from bursting? If so, why?
I have been told that, during especially cold periods during winter, one should run water out of the tap to ensure the pipes do not burst.
Does this really help? If so, why? If true, at what temperature should one start to adopt this policy?
Stan Shunpike
- 4,081
4
votes
0 answers
Maximum temperature that can be achieved
Possible Duplicate:
Why is there no absolute maximum temperature?
Is there any upper limit of the temperature that can be achieved? Is the speed of light a kind of barrier?
user1354439
- 345
- 1
- 3
- 18
3
votes
1 answer
if one electric heater makes the room 25 degrees, will two make 50?
The question in the title is of course childish and the answer is NO...
But then how much if not 50 degree ?
lets give some more data:
we have a electric heater with NO temperature regulation and only one stage On or Off.
It is used to heat a small…
d.raev
- 133
3
votes
1 answer
Do particles splitting decrease temperature?
I was thinking about temperature, and had a thought. Temperature is proportional to the average temperature per particle. If you split a particle, you have twice as many particles but only the same amount of energy. So, each half would only have…
rtpax
- 236
3
votes
4 answers
What is the lowest level things have temperatures?
Something can be cold. If you split it in half, it will still be cold, keep doing that and it will still be cold. My question is, what is the lowest level things can have temperature? Do atoms have temperatures? Do quarks?
user72789
3
votes
1 answer
Why doesn't the temperature of fluid flowing in a pipe increase if the flow speed is increased ?
I have learnt that the temperature of something is a direct measurement of the kinetic energies of the molecules in it.
Going by this argument, if the flow speed of fluid is increased in a pipe, and a thermometer measures its temperature with…
Gaurav
- 2,077
3
votes
3 answers
Why is the salad tray at the *bottom* of the fridge?
In a badly-adjusted (too cold) fridge, I notice that things like celery & lettuce are more likely to be spoiled by becoming frozen if they're put on a middle shelf, rather than the salad drawer at the bottom.
I realise the salad drawer is…
FumbleFingers
- 210
2
votes
1 answer
Why would the environmental lapse rate be slower near the ground?
I have data taken from over 2300 ascents through the atmosphere at various locations around the world,
for every 500 meters vertically upwards I have averaged the temperature and plotted it:
Its quite clear the lapse rate is dropping near ground…
Edd
- 199
2
votes
2 answers
How does a vacuum oven work?
I am doing some research on vacuum oven, but I cannot find out any website/book to tell me the theory. To my knowledge, it works better than regular oven. However, I have no idea why it is. Please help
Marco
- 621
2
votes
3 answers
Temperature of an object placed half way between sun and earth
I'm looking for a qualitative understanding. Suppose I put an object which was at $0$K half way between earth and sun. Initially the object sucks up more photons and emits fewer photons. After some time it reaches equilibrium. Now would the…
AgentS
- 934
2
votes
1 answer
Does a towel that's spread out cool faster than one that isn't?
I was thinking about how they say those sails on top of some dinosaurs helped regulate their body temperature. If a dinosaur didn't have that sail, would it really make any difference?
If you heated up two towels (large ones) to 50 degrees Celsius,…
Mateen Ulhaq
- 225
2
votes
0 answers
100°C =100K = how?
I'm in first year. Our class is in lesson " Heat and Thermodynamics". While solving a numerical problem of a reversible engine he told us that 100 degree Celsius is equal to 100 kelvin. I inquired but could not get satisfactory answer. Pleas help me…
Mirwise Khan
- 31
2
votes
0 answers
Temperature of air effused into tank - different predictions?
Consider air from outside at $T_0$ effusing into an evacuated and thermally isolated chamber.
By thermodynamic potentials, the temperature inside the tank is given by:
$$T_1 = \gamma T_0 = \frac{5}{3} T_0$$
However, by using Maxwell-Boltzmann…
user44840
- 933